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Finding the Fourth Proportional to 5,316.85, 7,975.28 and 1,853.29

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Solution

The fourth proportional to 5,316.85, 7,975.28 and 1,853.29 is: 2,779.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.85 : 7,975.28 = 1,853.29 : x
  2. Step 2: Convert to fraction form
    5,316.85/7,975.28 = 1,853.29/x
  3. Step 3: Cross multiply
    5,316.85x = 7,975.28 × 1,853.29
  4. Step 4: Simplify right side
    5,316.85x = 14,780,506.67
  5. Step 5: Solve for x
    x = 14,780,506.67/5,316.85
  6. Step 6: Final answer
    x = 2,779.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.